Abstract: A plant for building a tyre for a vehicle wheel includes a device for building carcass sleeves on building drums, a bead-forming machine, a first storage region, a second storage region, a first transport device movable between a picking-up position of pairs of annular anchoring structures in the first storage region and a release position of the pairs of annular anchoring structures in the bead-forming machine, and a second transport device movable between a first engagement position in the first storage region and a second engagement position in the second storage region, to move a plurality of annular anchoring structures between the first storage region and the second storage region.

Abstract: The present disclosure is directed to a tyre comprising a monitoring device fixed on an inner surface at a crown portion, wherein the monitoring device comprises an electronic unit and an electric power supplier, wherein the electronic unit comprises a sensor for detecting at least one of temperature, pressure, acceleration, deformation; a processing unit; a transceiver, wherein the monitoring device comprises a flexible support on which the electronic unit and the electric energy supplier are fixed, and wherein an acute angle (A) formed between a main development direction (L) of the flexible support and a direction of intersection of the equatorial plane of the tyre with the inner surface of the tyre is greater than or equal to 20° and lower than or equal to 70°.

Abstract: A car tyre having a tread that extends in axial direction for a width the tread including a central portion arranged across an equatorial plane, and two lateral portions opposed with respect to the central portion. The central portion is separated from the lateral portions of the tread by two circumferential grooves. The circumferential grooves have a width greater than about 6 mm. The central portion extends in axial direction for a width less than 20% of the width of the tread and includes a plurality of first sipes. Each lateral portion has a width greater than 30% of the width of the tread, and each lateral portion includes, furthermore, a plurality of transversal grooves. The transversal grooves of a lateral portion include at least a first inclined length that extends from a zone proximal to the respective circumferential grooves, moving away from the equatorial plane. The first inclined length has an inclination ??60° with respect to equatorial plane. Each lateral portion includes a plurality of sipes.

Abstract: The present invention regards a solid master elastomeric composition (masterbatch, MB) comprising silicate fibres with needle-shaped morphology of nanometric size, characterised by high fibre content and uniformity, a process advantageous for the preparation thereof and its use in manufacturing tyres for vehicles. Advantageously the present elastomeric composition allows minimising the drawbacks associated with the handling of the powdery fibres in the manufacturing of compounds for tyres, without altering the final performances thereof.

Abstract: The present disclosure relates to a tyre comprising a carcass structure, a tread band, a pair of sidewalls and at least one colored decorative element having a thickness equal to or greater than 200 ?m applied by co-vulcanization on at least one side of the pair of sidewalls, wherein the pair of sidewalls comprises an elastomeric composition comprising (i) at least one diene elastomeric polymer, and (ii) an ozone protection system, and the at least one colored decorative element is made with a cross-linkable elastomeric composition comprising (i) 100 phr of elastomeric polymer comprising 30 phr to 70 phr of natural and/or synthetic isoprene rubber, and 30 phr to 70 phr of a rubber chosen from butyl rubber, halobutyl rubber, butadiene rubber, styrene-butadiene rubber, and mixtures thereof, and (ii) 5 phr to 120 phr of at least one reinforcement filler.

Abstract: A method and a plant for managing the production cycle of a plant for building tyres for vehicle wheels, wherein the plant provides for a storage region for anchoring annular structures and a plurality of processing stations at least one of which is associated with a forming drum, includes feeding a plurality of anchoring annular structures to the storage region, picking up the anchoring annular structures from the storage region at a predetermined picking-up position that does not change on changing of the types of the anchoring annular structures, and feeding the picked-up anchoring annular structures to the processing station associated with the forming drum.

Abstract: The present disclosure is directed to a tyre comprising a monitoring device fixed on the inner surface at a crown portion of the tyre, wherein the monitoring device comprises an electronic unit and an electric power supplier electrically connected to the electronic unit, the electronic unit comprising a sensor for detecting at least one of temperature, pressure, acceleration, deformation, a processing unit; a transceiver, wherein the monitoring device comprises a flexible support in a single body, the electronic unit being fixed on the flexible support, wherein the electric power supplier comprises a plurality of electric energy accumulators electrically connected to the electronic unit for supplying the electronic unit, and wherein each accumulator is fixed onto the flexible support.

Abstract: A method for managing a carcass structure building line, a plant and a process for building tyre carcass structures, wherein the plant includes a carcass structure building line provided with a plurality of stations including an unloading station and n building stations. A group of forming drums being processed includes m forming drums being processed defining a first size of carcass structure being processed. Three groups of entering forming drums include respective entering forming drums, defining a second size of carcass structure being processed. A pair of support elements being processed includes a first and a second support element being processed and three pairs of entering support elements respectively include a first and a second entering support element. The invention also relates to a method for managing a carcass structure building line.

Abstract: A motorcycle tyre has a tread band including a central portion and two shoulder portions arranged at axially opposite sides of the central portion. The central portion includes a first plurality of grooves extended according to a substantially longitudinal direction and alternatively arranged at opposite sides of the equatorial plane of the tyre. Each groove of the first plurality of grooves has a substantially curvilinear course such as to form a concavity. The central portion further includes a sub-portion substantially free of grooves placed astride the equatorial plane of the tyre. Each of the shoulder portions includes a second plurality of grooves arranged obliquely relative to the equatorial plane of the tyre.

Abstract: A method for checking tyres. A shift is determined along an acquisition direction between an acquisition point on a surface of a tyre to be checked and a position occupied by the acquisition point following a rotation of the tyre about its rotation axis. A linear laser beam is projected on a linear portion of surface of the tyre, and propagates in a direction parallel to the acquisition direction. A matrix image of a matrix portion of surface of the tyre containing the linear portion of surface is acquired; the image containing a laser line reflected by the linear portion of surface. A sub-portion of the matrix image is determined as a function of the determined shift, containing the reflected laser line. The sub-portion of the matrix image is then processed to determine an elevation profile of the linear portion of surface.

Abstract: The present disclosure is directed to a tyre with a monitoring device equipped with an electronic unit, an electric power supplier and an electrical connection between the electronic unit and the electric power supplier, wherein the electronic unit comprises a rigid printed circuits board on which a sensor is fixed to detect temperature, pressure and/or acceleration, a processing unit and a transceiver and wherein the electronic unit and the electric power supplier are both fixed on an inner surface of the tyre at the crown.

Abstract: A winter tyre is described having a tread band wherein a plurality of blocks configured to obtain optimal performance both on snow-covered roads and on dry and wet roads in specific conditions of use (in particular during acceleration, braking or cornering with high power vehicles). Each of the aforementioned blocks has at least one sipe that defines two adjacent block portions in the respective block, each block portion having a respective surface facing the sipe. The surface has a radially outer portion having a profile which is substantially undulating, a radially inner portion also having a profile which is substantially undulating and an intermediate portion arranged between the radially outer portion and the radially inner portion and having a profile which is substantially rectilinear.

Abstract: The present disclosure is directed to a process and an apparatus for cutting a continuous rubber-covered belt in a process for building tyres for vehicle wheels, wherein the apparatus comprises a cutting group, in turn comprising: a knife formed by a first half-part and a second half-part and movable along a cutting direction that is tilted with respect to a supply direction of a rubber-covered belt placed beneath the knife. The process comprises: lifting a lifting element placed below the continuous rubber-covered belt and at the cutting zone, until a portion of rubber-covered belt is lifted, and lowering the single first-half part of the knife, making it slide with respect to the second half-part.

Abstract: A green tyre (2) for bicycles is built, comprising at least one carcass ply (4) having axially opposite end flaps (4a) engaged with respective bead cores (5) and a tread band (6) applied in a radially outer position around said at least one carcass ply (4). The built tyre (2) removed from the building drum, is profiled so as to translate the tread band (6) in a radially outer direction with respect to the bead cores (5), so as to impart a cross-sectional convex profile to the tyre (2) in a radially outer direction. The profiled tire is engaged by means of a transfer member (31) comprising a gripping device (30) which holds it hanging and loads it into a vulcanisation mould (101) by axially positioning an axial centreline plane (M) of the green tyre at an axial reference (51) arranged at a predetermined height along a reference axis (K) of a central body (103) of the vulcanisation mould (101).

Abstract: A method for checking a continuous elongated element during the building of a tyre for vehicle wheels. A beam of an electromagnetic radiation is projected on a section of the continuous elongated element dispensed by a dispensing head and interposed between the dispensing head and a first contact area of the continuous elongated element with a radially outer surface of a tyre being processed. An image of a radiation reflected by the section is acquired. A first parameter related to the image is detected, and the first parameter is compared with a second reference parameter.

Abstract: Adducts are described formed between pyrrole derivatives of formula (I) an carbon allotropes in which the carbon is sp2 hybridized, such as for example carbon nanotubes, graphene or nanographites, carbon black. The pyrrole derivatives bear substituents on the nitrogen atom suitable for improving the physicochemical characteristics of said allotropes. A process for preparing said adducts is also described. The adducts are formed with a pyrrole of formula (I) wherein X is selected from the group consisting of: The other substituents are as defined in the claims.

Abstract: The present invention relates to new elastomeric materials for the production of tyres for vehicle wheels with good mechanical properties, in particular high moduli associated with low hysteresis values, including new reinforcement materials. Said reinforcement materials are obtainable by derivatising silica—in-situ during the mixing of the elastomeric composition, or previously—with special silanising agents (A) and silsesquioxanes (B), both substituted with reactive alkenyl functionalities.

Abstract: The present invention relates to a vulcanizable elastomeric composition comprising a secondary accelerator that may be used in combination with sulphenamide alone, completely avoiding the use of a guanidine. Moreover, said accelerator promotes dispersion of the silica in the compound and migrates with difficulty in the elastomeric composition itself. The invention also relates to the use of a vulcanization accelerator for said elastomeric composition, to the associated vulcanization process and to a tyre comprising same.